FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, an unvalidated auth_length field read from the network triggers a WINPR_ASSERT() failure in rts_read_auth_verifier_no_checks(), causing any FreeRDP client connecting through a malicious RDP Gateway to crash with SIGABRT. This is a pre-authentication denial of service affecting all FreeRDP clients using RPC-over-HTTP gateway transport. The assertion is active in default release builds (WITH_VERBOSE_WINPR_ASSERT=ON). This issue has been patched in version 3.24.2.
1.1.0~git20140921.1.440916e+dfsg1-5ubuntu11.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.21.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.31.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.41.1.0~git20140921.1.440916e+dfsg1-15ubuntu11.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.11.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.23.30.0+dfsg-0ubuntu0.24.04.13.14.0+dfsg-1ubuntu13.15.0+dfsg-2.13.16.0+dfsg-1ubuntu13.16.0+dfsg-23.16.0+dfsg-2ubuntu0.13.16.0+dfsg-2ubuntu0.33.16.0+dfsg-2ubuntu0.43.16.0+dfsg-2ubuntu0.5Exploitability
AV:NAC:HAT:NPR:NUI:PVulnerable System
VC:NVI:NVA:HSubsequent System
SC:NSI:NSA:NCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N